Wisconsin’s Backyard Ultra Big Hill Bonk


Mar 31, 2023 at 10:00 AM

Wisconsin’s Backyard Ultra Big Hill Bonk

1201 W Big Hill Rd, WI 5

Beloit WI, 53511


Event Facebook page

Entry Fee $100
(Lowest or Early Registration)

Prize Money: no


Type: Ultra

Percent of the course on un-paved trails: 100%

First Year of the Event: 2020


Inspired by the Barkley Marathons’ creator, Gary Cantrell, aka Lazarus Lake, who started the original Big Dog’s Backyard Ultra, more races of this format have been popping up around the world. This is one of them.

So in likewise fashion, the Wisconsin’s Backyard Ultra will follow as closely to Laz’s original format as possible.

It truly is a simple concept. It’s a “Last Person Standing Race”. Meaning in the end, just one runner will finish the race.

At 1730 hours on Friday evening, April 3rd, we will start a race at the Welty Environmental Center in Beloit Wisconsin’s Big Hill Park and run a 4.166 mile loop. Runners will have just one hour to complete this loop.

Again at 1830 hours, we will begin another loop around the same 4.166 mile course.
The same will be done at 1930, 2030, 2130, and so on, every hour.

Runners must be standing in the starting corral when the next loop starts or else they will not be able to continue.
Runners will also not continue if they choose not to themselves.
There will be no late starts once the bell is rung.
Loops will continue until only one runner remains, and at that point, once that person completes a loop on their own, that runner is the winner.
All other runners are a DNF.

It is important to note there MUST be one person to finish a loop in the hour given. For example: If two runners are left and they both finish a loop in the time given and then one runner drops, the other runner still must complete another loop in the time given. If that last runner does not finish the last loop in the hour given, he will have “DNF” and there will be no finishers.


No photos available.


Past Event Dates

Held on Mar 31, 2023

Held on Apr 01, 2022

Held on Sep 12, 2021

Held on Apr 03, 2020

Event Results